Execute RequestReview

curl --request POST \
  --url https://experiments.confidence.dev/v1/workflows/rollout/instances/{instance}:requestreviews \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{}'

{
  "isApproved": true,
  "responses": [
    {
      "reviewer": "<string>",
      "state": "STATE_UNSPECIFIED",
      "commentId": "<string>",
      "groups": [
        "<string>"
      ],
      "id": "<string>",
      "stale": true
    }
  ],
  "reviewId": "<string>",
  "reviewers": [
    {
      "identity": [
        "<string>"
      ],
      "role": "ROLE_UNSPECIFIED"
    }
  ],
  "status": "<string>"
}